sttrimiws.c

来自「程序涵盖了设计FIR滤器的各种方法」· C语言 代码 · 共 46 行

/*-------------- Telecommunications & Signal Processing Lab ---------------
                             McGill University

Routine:
  char *STtrimIws (const char Si[])

Purpose:
  Trim leading white-space

Description:
  This routine returns a pointer to the first character in a string that is not
  white-space (as defined by isspace).  If the input string consists entirely
  of white-space, this routine returns a pointer to the terminating null
  character.

Parameters:
  <-  char *STrimIws
      Pointer to the first non-white-space character
   -> const char Si[]
      Input character string

Author / revision:
  P. Kabal  Copyright (C) 1999

  $Revision: 1.6 $  $Date: 1999/06/04 22:34:58 $

-------------------------------------------------------------------------*/

static char rcsid[] = "$Id: STtrimIws.c 1.6 1999/06/04 FilterDesign-v4r0a $";

#include <ctype.h>

#include <libtsp/nucleus.h>


char *
STtrimIws (const char Si[])

{
  /* Find the first non-white-space character */
  for (; isspace (*Si); ++Si)
    ;

  return ((char *) Si);
}